Cheap Flights from San Diego to Denver

Cheapest flights from San Diego to Denver

Flaut.Travel was designed and developed by a team dedicated to making the process of searching, comparing and booking airline tickets as easy and convenient as possible. Our service helps travelers to find and buy the cheapest flights from San Diego to Denver. We have connected more than 40 airlines and airline ticketing agencies to help you find the most suitable and affordable flight option.

Cheapest one way flight

$31

Frontier Airlines

Direct flight

2h 38m

02/13/2026

The cheapest one-way flight from San Diego to Denver departs on 02/13/2026, is operated by Frontier Airlines and costs $31

Cheapest round trip flight

—

There is no information about the cheapest roundtrip flight from San Diego to Denver

The fastest flight

2h 34m

Fastest flight from San Diego to Denver takes 2h 34m

Direct flights

Several times a week

There are direct flights on this route 2 days a week: Th and Fr

Earliest flight

6:30 AM

Latest flight

9:52 PM

Direct flights count

168

Distance

1340km

Timezone difference

1h

The distance between San Diego and Denver is 1340km (831 miles). There are 168 direct flights from San Diego to Denver. The time difference between San Diego and Denver is 1h. Flights from San Diego begin at 6:30 AM. The latest flight from San Diego departs at 9:52 PM

Remember that on average the ideal time to book flights is 2 months before departure!

Airfare from San Diego to Denver by month

We carefully collect statistics on the search and pricing of airlines and, based on these data, we make an assumption about future prices. Thus, you can better understand which season is the cheapest to fly from San Diego to Denver

February 2026

Lowest price

on average:

$31

Avg Price

Airlines operating on route

The route San Diego — Denver is served by several airlines: Southwest Airlines, Alaska Airlines, and Frontier Airlines. This gives passengers more freedom in choosing flights. You can consider not only the price but also schedules, baggage policies, and onboard service. Our service compares all offers so you can find tickets from $31 and choose the most convenient option. Thanks to airline competition, you may also find promotional fares or special offers, helping you save even more. Plan your trip in advance and choose the best flights without overpaying.

Southwest Airlines

Starting at $181

Alaska Airlines

Starting at $166

Frontier Airlines

Starting at $31

Direct Flights from San Diego to Denver

A direct flight is the most convenient and comfortable way to fly from San Diego to Denver, despite the fact that sometimes flights with transfers can cost significantly less.

San Diego — Denver

SAN — DEN

12/16/2025

Departure

Direct flight

WN4220

Starting at $181

San Diego — Denver

SAN — DEN

12/17/2025

Departure

Direct flight

AS1429

Starting at $166

San Diego — Denver

SAN — DEN

12/23/2025

Departure

Direct flight

F92818

Starting at $205

San Diego — Denver

SAN — DEN

02/12/2026

Departure

Direct flight

F94928

Starting at $109

San Diego — Denver

SAN — DEN

02/13/2026

Departure

Direct flight

F92818

Starting at $121

Schedule of direct flights from San Diego to Denver

A direct flight is the easiest way to get to your destination. The following airlines operate non-stop flights from San Diego to Denver:

Unable to find information about the schedule of direct flights from

San Diego airports overview

McClellan-Palomar Airport

•

CLD

46km

San Diego International Airport

•

SAN

5km

•

Denver airports overview

Centennial Airport

•

APA

1km

Denver International Airport

•

DEN

30km

•

Frequently asked questions (FAQ)

Answers to questions about the route that travelers are most interested in.

How much is the cheapest flight ticket from San Diego to Denver?

The cheapest flight ticket from San Diego to Denver according to data for the last 48 hours costs $31

When is the best time to buy air tickets on the route San Diego — Denver?

Often the best time to buy tickets from San Diego to Denver is 2 months before departure.

When is the cheapest time of year to fly from San Diego to Denver?

Based on statistics over the past years, the lowest prices for flights from San Diego to Denver can be found flying in these months: February.

How long does it take to fly from San Diego to Denver?

The fastest flights from San Diego to Denver start from 2 hours 34 minutes in the air.

Which airline can fly direct from San Diego to Denver?

The following airlines operate direct flights on the route San Diego — Denver: Southwest Airlines, Alaska Airlines, Frontier Airlines

Special offers and sales on air tickets from San Diego to Denver

We keep tight track on airlines' pre-holidays sales and other special offers occurences all the time to let you save maximum amount of funds while traveling to your family or just going out on vacation.

We couldn't find any special offers for flights from San Diego to Denver

Alternative routes

Bakersfield ➜ Denver•Long Beach ➜ Denver•Mexicali ➜ Denver•Phoenix ➜ Denver•Santa Barbara ➜ Denver•Santa Maria ➜ Denver•Tijuana ➜ Denver•Yuma ➜ Denver•San Diego ➜ Albuquerque•San Diego ➜ Amarillo•San Diego ➜ Colorado Springs•San Diego ➜ Clovis•San Diego ➜ Fort Collins•San Diego ➜ Grand Junction•San Diego ➜ Ogden•San Diego ➜ Pueblo•San Diego ➜ Provo•San Diego ➜ Salt Lake City

•••••••••••••••••••

Cheapest one way flight

$31

Frontier Airlines

Direct flight

2h 38m

02/13/2026

The cheapest one-way flight from San Diego to Denver departs on 02/13/2026, is operated by Frontier Airlines and costs $31

Cheapest round trip flight

—

There is no information about the cheapest roundtrip flight from San Diego to Denver

The fastest flight